For breathing issue while baby is asleep, Steam inhalation is d best, natural n safest remedy. Along wid Sitopladi chuba mixed with honey.. qty... should be 1 full baby spoon wid half baby spoon of Sitopladi churna,thrice a day.
One of the best thing is put mustard oil drops in nose while the baby is asleep. Note: mustard oil should be heated well to evaporate the bitterness.

badam rogan is for cold...
for cough just heat properly 2 garlic cloves in half bowl of mustard oil and once it cools down rub it on chest and neck of ur baby during night tym.. chest should be well covered after applying oil.

pour 2 drops of badam rogan in the nostrils of ur kid, and rub it on head, chest ,hands and feet..
repeat it 2-4 times daily...
you can also do this when u observe that ur kid has started sneezing and u know he is catching cold... cold will not come his way if u do so.. no need of Medicines